Shock-absorber for spring-vehicles.



PATENTED APR. 24, 1906,

R. P. WINSOR. SHOCK ABSORBER FOR SPRING VEHIO LES.

APPLIOA TION FILED SEPT.5, 1905.

Eirceaaea:

'UhTiTED STATES Arnnr orrron.

ROBERT P. VINSOR, OF PROVIDENCE, RHODE ISLAND.

SHOCK-ABSORBER FOR SPRlNG-VEHICLES.

Specification of Lettexsletent.

Patented April 24, 1906.

Application filed September 5,1905. Serial No. 277,086.

To all 1011 0772, it may concern:

Be it known that 1, ROBERT P. Wmson, a citizen of the United States of America, and e resident of Providence, in the State of Rhode Island, have invented a new and useful Improvement in Shock-Absorbers for Spring- 1 Vehicles, of which the following u specification.

This invention relates to shock-absorbore for automobiles and other road-vehicles in which the body of the vehicle is supported by springs.

The present invention consists in certain novel combinations of ports hereinafter described and claimed, and its leading object is to prevent or reduce violent motion of the spring-supported body in both directions on rough roads, so as toprevent the breakage of the springs, the straining of the vehicle, and the shaking up of the passengers by sudden shocks, and at the some time to avoid con= tinuously intensifying or stiffening the springs, so as to render the vehicle easy riding on smooth roads.

The distinguishing object of the pres nt invention is to adapt the frictional device of the shock-absorber to cooperate with a solid connection in the form of a link, and at the same time to have an effective lost motion d evicc whereby the springs are automatically freed from resistance on smooth roads.

A sheet of drawings accompanies this specification as part thereof.

Figure l is a side view of one of the improved shock-absorbers attached to a springvehicle: and Fig. .2 is a like view of its frictional device, detached, on a larger scale.

Like reference characters refer to like parts in both figures.

It will be understood that each vehicle is provided with one or more of the shock-absorbers, usually one at each bod ysupporting spring.

In Fig. 1 the axle A is crossed by a semielliptic body-supporting spring B, which is attached to the axle by a pair of clips 1 and 2, and is connected with the bOClYflfllIlC C by it link at the front end of the spring and u hinge-joint 4 at the extremity of a rigid extension 5 of the frame C. The cup 6 of the clips 1 and 2 is adapted for the pivotal attachment thereto directly above the axle by ehorizontal bolt 7 of the lower end of a solid connection D in the form of a short link, the upper end of which is pivotellycoupled to a stud 8, which projects rigidly from the side of e lever-piece E near its inner end. A frictiona-l strap 9, forming part of said leverpiece E and rovided with a lining 10 of leather or the ike, embraces the periphery of a circular drum F, which is pivotnlly attached to the bodyframe C by a central stud 11, and is constructed with one or more segmental slots 12, preferably two, concentrlc with said stud 11. lVithin said slots 12 stops G are fixedly attached to the body-frame O by bolts 13 or by any approved means and are preferably provided with attached cushions M and to contact with the respective ends of the slots 12 at the limits of the 10st motion allowed for by said slots. When the parts are at rest, said sto s G occupy a centrnl position within sei. slots 12, and on smooth roads the play of the springs B, acting through the axle A, solid connection D, lever-piece E, and drum F, and through the body-frame C and stops G, causes the leverpiece E and drum F to move freely as one pert on the pivotal stud 11, and the ends of the slots 12 to approach and recede from said stops G without contact. When such smooth-road motion is exceeded, the ends of said slots 12 contact alternately with the cushions 14 and 15, and at each contact said drum F is rendered stationary with reference to the lever- )iecc E, and the movement ofthe lever-piece is continued under the fric tional resistance due to the contact of its 1021 ther-lined strap 9 with the periphery of the drum F, and thus such excessive motion is reduced and controlled, or, in other Mr rdn, the shock is resisted and absorbed," and the return movement of the body and springs is retarded and freed from damage.

Means for varying the frictional resistance may preferably consist of a vertical screwbolt 16, connecting the free ends of the strap 9 with each other and easily accessible behind the vehicle or sh s respective ends.

Other forms of lost-motion device may take the place of the stop or stops G and slot or slots 12 with their appurtenances.

The cushions 14 and 15 may be of rubber;

as indicated, or of any referred form, and may obviously be nttac ed within the ends of the slots 12 instead of to the stops G, and other like modifications will suggest themselves tp those skilled in the art.

The principle, parts, and combinations that are common to the s e'cific shock-absorber above described and that described and claimed in a companion specification of even date herewith are hereby disclaimed in favor of that specification.

Having thus described said improvement, I claim as my invention and desire to patent under this specification- 1. The combination, with an axle and the springsupported body-frame, of a road-vehicle of a shock-absorber corn risin a con- 2. The combination, with an axle and the spring-supported body-frame, of a. road-vs hicle, of a shock-absorber comprising a connecting-link pivotally coupled to the axle, a lever-piece pivotally connected to said link and having a leather-lined strap as p art thereoi, a circular drum embraced peripherally by said strap, a central stud on \vhich turns and by which it is attached to said body-frame, and a lost-motion device comprising a segmental slot in, said drum coneen-' 1 trio with said stud and a stop fixedly attached to said body-frame Within said slot, whereby said friction device is permitted to oscillate freely Within smooth road limits of motionand to automatically resist and ab so'rb shocks and to retard return movements of the spring-supported body.

3. The combination, with an axle and the spring-supported body-frame, of a road-vesaid drum hicle, of a shocleabsorber comprising a connectirW-linli )ivot all r coucled to the axle, a C" 1 leWcr-piece pivotally connected to said lmh and having-a leather-lined strap as part thercof, a circular drum embraced peripherall y by said strap, a central stud on which said drum turns and by which it is attached to said body-frame, and a lost-motion device consisting ofapair of segmentalslots in said drum eraser concentric with said stud, and. a pair of stops fixedly attached to said body-flame Within said slots, whereby said friction device is permit ted to oscillate freely Within smooth road limits of motion and to automatically resist and absorb shocks and to retard return movemerits of the spring-supported body.

4. The combination, with an axle. and the spring-sixpported bmly-lraine, of a roadve hicle, of a shock-absorlwr comprising a con ncctingdink pivotaliy coupled to the axle, a lever-piece pivotally connected to said link and ha ving adeathcr-li ned strap as part thereof, a circular drum embraced peripl'icrally by said. strap, a central stud on which said drum turns and by which it is attached to said body-frame, and a lost1nOti n device consisting of a pair o'l' segmental slots in said drum com-entric with said stud, and a pair of stopsiixedly attached to said body-frame within said slots, and provi led with cushions to contact with the respective ends of said slots, whereby said ilriciion device is permitted to oscillate 'l recly Willllll smooth road limits of motion and to automatically resist and absorb shocks and to retard return movements of the spririg-supported body.

5. The combination, dh an avle and the spririg-supported body-frame, of a road-vehicle, of a shoclt-absorber comprising a connect'iiig-linlt pivotally coupled to the axle, a lever-piece pivotally connected lo-snld link a id haviutga lcat her-lined strapaspart therei oi, a circular drum embraced peripherally by said strap, a central stud on which said drum turns and by which it is attached to said body-frantic, a iost---motion device whereby said friction device is permitted to oscillate freely within smooth road limits oi motionand to automatically resist and absorb shocks and toretard return movementsol'thcspring- I support d body amlnieans lor adjusting said strap to vary the resist ance of said l'riction device, substantially as hercinbei'oro specified.

Dated the 2d day of September, 1905.

ROBERT P. WINSUR. V'Vitnesscs:

FnANcis J. llnunns, STEPHEN A. tomt'a. 

